Arbitrum One
Scalable Layer 2 solution for Ethereum's growth
Access Arbitrum One through our unified RPC API with 65 supported methods. Benefit from intelligent routing across multiple providers, real-time node health monitoring, and optimized performance with economy and performance routing strategies. Get started with instant API access and transparent pricing.
This endpoint routes read requests to community-run public RPC nodes across multiple regions. Send transaction requests are routed to premium infrastructure for guaranteed delivery. Ideal for testing and development — no API key required.
Nodes in Sync (Lag Checks)
Daily in-sync status by provider over 30 days for this chain.
Node Correctness (Replay Checks)
Daily replay correctness by provider over 30 days for this chain.
WebSocket Notifications
Real-time subscriptions on Arbitrum One are priced per million notifications, separate from the per-request pricing in the method table below.
All subscription types on this chain share the same per-notification price. Pricing as of October 2026.
Supported Methods(65)
Method | Usage | Providers | Price | Latency (p50) |
|---|---|---|---|---|
eth_call | High | 15 | $3.00/M $7.18/M | 43ms 24ms |
eth_getBlockByNumber | High | 15 | $3.00/M $6.22/M | 51ms 18ms |
eth_getBlockReceipts | Medium | 12 | $3.00/M $6.00/M | 45ms 61ms |
eth_blockNumber | Medium | 15 | $3.00/M $6.00/M | 16ms 50ms |
eth_gasPrice | Medium | 15 | $3.00/M $6.66/M | 39ms 18ms |
eth_chainId | Medium | 15 | $3.00/M $6.00/M | 18ms 21ms |
eth_getTransactionByHash | Medium | 15 | $3.00/M $6.00/M | 40ms 31ms |
eth_getLogs | Medium | 14 | $6.13/M $10.27/M | 304ms 15ms |
eth_getBalance | Medium | 15 | $3.00/M $8.42/M | - 23ms |
eth_getTransactionCount | Medium | 15 | $3.00/M $6.00/M | - 32ms |
About Arbitrum One
Arbitrum One is a Layer 2 scaling solution for the Ethereum blockchain, developed by Offchain Labs, a New York-based company founded in 2018. The Arbitrum One mainnet launched on August 31, 2021, aiming to enhance Ethereum's scalability and transaction throughput.
Arbitrum One utilizes optimistic rollups to process transactions off-chain, thereby increasing transaction speeds and reducing costs while maintaining Ethereum's security. This approach allows Ethereum smart contracts to scale by exchanging messages with other smart contracts on the Ethereum mainchain and those on the Arbitrum second layer.
The network's native currency is Ether (ETH), with 18 decimal places. Developers can interact with Arbitrum One through various RPC endpoints. For monitoring and exploring the blockchain, users can utilize block explorers.